What happened to these mma gyms/team?

They used to be the top of the foodchain when it comes to mma training and producing champions, and now I haven't heard a word from them?

What happened to these great mma teams?

Lion's Den
Team Quest
Hammer House
Extreme Couture
Milletich Fighting Team
Ruas Vale Tudo
Chute Boxe
Brazilian Top Team
Russian Top Team
Yoshida Dojo
Krazy Bee
Red Devils MMA
Wolf's Lair MMA